Also, been using these every day since I bought them - they were a last minute purchase before I came on holiday (my Koss Porta-Pros died in one ear, need to send them off for replacement). Sound quality and insulation is ridiculous for the price - I used them on an aeroplane behind a full row of Irish lads on tour and couldn't hear a peep (and sound doesn't bleed either).
My one gripe would be that the metal bit of the earbud sticks out a little far and can hurt your ear if improperly positioned. Also the cable is braided up until the Left-Right split, and I wish it was all braided.
The most common fit for comfort is to take off the tips that come on the buds, and replace with the medium in the box - they are subtly different sizes and most people prefer the replacement tip.